New Conduit Specification

Transcription

1 New Conduit Specification Combines Portions of Sections 715, 783 & 992 into New Section 630. Coordinated Effort Between Traffic Operations, ITS, Lighting, Construction, and Industry

2 New Conduit Specification Signal, ITS and Lighting Conduit Pay Items Consolidated into Single Pay Item Effective July 1, 2013 On All Projects

3 Section Materials Conduit: Use materials that have been tested and listed by a Nationally Recognized Testing Laboratory to the following industry standards: Schedule 40 and 80 Polyvinyl Chloride (PVC)...UL 651 Fiberglass Reinforced Epoxy..UL 2420 Intermediate Metal UL 1242 Rigid Galvanized Metal UL 6 Rigid Aluminum.UL 6A PVC Coated Intermediate Metal ASTM A135/A135M, ASTM A513, ASTM A568/A568M, NEMA RN Liquid Tight Flexible Metal..UL 360 High Density Polyethylene (HDPE) Standard Dimension Ratio (SDR) 9-11 ASTM F2160 HDPE SDR 13.5.ASTM F2160, NEMA TC-7 Schedule 40 and 80 HDPE.UL 651A

4 Section Materials Locate Wire: Ensure that locate wire is a single copper conductor with a minimum gauge of No. 12 AWG. Ensure locate wire is insulated using a 45 mil minimum thickness polyethylene sheath that is orange in color and marked to identify the manufacturer and the conductor size Locate Wire Grounding Unit: Ensure that locate wires are attached to a wire grounding unit (WGU) dedicated to safely dissipate high transient voltages or other foreign electrical surges induced into the designated system.

5 Section Materials Warning Tape: Ensure that the buried cable warning tape is flexible, elastic material 3 inches wide, 6 mil thick, intended for burial and use as an underground utility warning notice, and that the surface of the warning tape is coated and sealed to prevent deterioration caused by harsh soil elements. Ensure that the warning tape color follows the American Public Works Association color code for underground utilities and has the repeating message CAUTION: FDOT CABLE.

6 Section Materials Route Markers: Route markers may be either a standard route marker (SRM) type or an electronic route marker (ERM) type. Ensure the SRM is a rigid, tubular, driven post used for location and notification purposes only. Ensure the ERM is physically identical to the SRM, but also includes a termination board to provide aboveground access to locate wire buried alongside conduit and cable runs.

7 Section Installation Requirements General: Install the conduit in accordance with NEC or National Electrical Safety Code (NESC) requirements and the Design Standards. Consider the locations of conduit as shown in the Plans as approximate. Construct conduit runs as straight as possible, and obtain the Engineer s approval for all major deviations in conduit locations from those shown in the Plans. Include buried cable warning tape with all trenched conduit. Mark the location of the conduit system with route markers as shown in the Plans and approved by the Engineer. Ensure that all route markers used are new and consistent in appearance.

8 Section Installation Requirements. For conduit installed by directional bore, install in accordance with Section 555. For conduit installed by jack and bore, install in accordance with Section 556. Use only intermediate metal conduit, rigid galvanized metal conduit, rigid aluminum conduit or PVC coated intermediate metal conduit for above-ground electrical power service installations and rigid galvanized metal conduit or rigid aluminum conduit for underground electrical power service installations.

9 Section Installation Requirements. Use Schedule 80 PVC or fiberglass reinforced epoxy conduit in structural elements in or on bridge decks. Use HDPE with an SDR number less than or equal to 11, Schedule 80 PVC or Schedule 40 PVC for underground installations in earth or concrete for traffic control signal and device applications. Use HDPE with an SDR number less than or equal to 13.5, Schedule 80 PVC, or Schedule 40 PVC for underground installations of electrical conduit in earth for lighting applications and landscape irrigation applications. Use HDPE with an SDR number less than or equal to 13.5, Schedule 80 PVC, Schedule 40 PVC, or rigid galvanized metal for underground installations of electrical conduit in concrete for lighting applications.

10 Section Installation Requirements. Do not place more than the equivalent of three quarter bends or 270 degrees of bends, including the termination bends, between the two points of termination in the conduit, without a pull box. Obtain the Engineer s approval to use corrugated flexible conduits for short runs of 6 feet or less When backfilling trenches in existing pavement, use a flowable fill meeting the requirements of Section 121.

11 Section Installation Requirements Conduit Sizes: Size the conduit to be used on all installations, unless otherwise shown in the Contract Documents. Use conduit of sufficient size to allow the conductor to be installed without any damage and meeting NEC requirements. Use conduit that is at least 2 inches in diameter, with the following exceptions: For conduit protecting the ground wire on the side of a pole, use conduit that is at least 1/2 inch in diameter. For traffic control signal and device electrical service conduit, use the minimum conduit size required by the local maintaining agency and the electrical service provider.

12 Section Method of Measurement. Payment for conduit placed underground will be based on the horizontal length of the trench or bore measured in a straight line between the centers of pull boxes, cabinets, poles, etc., in linear feet, regardless of the length or number of conduits installed. No allowance will be made for sweeps or vertical distances below the ground. Payment for conduit placed aboveground or bridge mounted will be based on the actual length of conduit installed.

13 Section Basis of Payment. Pay Items for conduit under Section 555, 556, 715 and 783 will be discontinued. All conduit for signal, lighting, ITS and landscaping sleeve applications will be paid for under Section 630. Conduit that is included as ancillary to concrete railings and barriers, sign assemblies will continue to be included in the cost of the railings, barrier and assembly.

14 Section Basis of Payment. Pay Item AB Conduit A = Operation 1 (Furnish & Install) B = Installation Method 1 (Open Trench) Underground * 2 (Directional Bore) Underground or Underpavement* 3 (Jack & Bore) Typically under railroad* 4 (Aboveground)** 5 (Bridge Mount)** *Measured as the horizontal length of the trench or bore. **Measured as the actual length of each conduit.

15 Section Basis of Payment. Payment for conduit will be based on horizontal length of trench or directional bore. No additional payment for multiple conduits in the same trench. Payment for conduit placed under existing turf will be made as OPEN TRENCH. DO NOT consider new pavement or sidewalk when choosing installation method/pay item.

16 Section Basis of Payment. DIRECTIONAL BORE will be used when pull box to pull box length includes any distance under existing pavement, sidewalk, or other location where open trench is not practical. Payment for conduit placed by JACK & BORE will be made as jack & bore, for the total pull box to pull box length. No payment adjustment will be made if the Contractor chooses to use an alternative method approved by the Engineer.

17 Section Basis of Payment. No payment will be made for failed bore paths, injection of excavatable flowable fill, products taken out of service, or incomplete installations.

18 Questions If you have any questions, please feel free to contact us.